.user-card {
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  padding: 15px;
  margin: 10px 0;
}

.user-card h2 {
  margin: 0 0 10px 0;
  color: #495057;
}

.user-card p {
  margin: 0;
  color: #6c757d;
}

.greeting {
  background-color: #e3f2fd;
  border: 1px solid #bbdefb;
  border-radius: 8px;
  padding: 15px;
  margin: 10px 0;
  text-align: center;
}

.greeting h3 {
  margin: 0 0 10px 0;
  color: #1976d2;
}

.greeting p {
  margin: 0;
  color: #424242;
}

.user-profile {
  display: flex;
  align-items: center;
  background-color: white;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  padding: 15px;
  margin: 10px 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.user-avatar img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  margin-right: 15px;
}

.user-info {
  flex: 1;
}

.user-info h3 {
  margin: 0 0 5px 0;
  color: #495057;
}

.user-info p {
  margin: 0 0 5px 0;
  color: #6c757d;
  font-size: 14px;
}

.user-actions {
  margin-top: 10px;
}

.btn-edit {
  background-color: #28a745;
  color: white;
  border: none;
  padding: 5px 10px;
  border-radius: 4px;
  margin-right: 5px;
  cursor: pointer;
  font-size: 12px;
}

.btn-edit:hover {
  background-color: #218838;
}

.btn-delete {
  background-color: #dc3545;
  color: white;
  border: none;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
}

.btn-delete:hover {
  background-color: #c82333;
}

.card {
  background-color: white;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  margin: 15px 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  overflow: hidden;
}

.card-header {
  background-color: #f8f9fa;
  padding: 15px;
  border-bottom: 1px solid #dee2e6;
}

.card-header h3 {
  margin: 0;
  color: #495057;
}

.card-body {
  padding: 15px;
}

.card-footer {
  background-color: #f8f9fa;
  padding: 10px 15px;
  border-top: 1px solid #dee2e6;
  font-size: 12px;
  color: #6c757d;
}

.item-list {
  background-color: white;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  padding: 15px;
  margin: 10px 0;
}

.item-list h3 {
  margin: 0 0 15px 0;
  color: #495057;
}

.item-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  border-bottom: 1px solid #f1f3f4;
  cursor: pointer;
  transition: background-color 0.2s;
}

.item:last-child {
  border-bottom: none;
}

.item:hover {
  background-color: #f8f9fa;
}

.item-name {
  font-weight: 500;
  color: #495057;
}

.item-description {
  font-size: 12px;
  color: #6c757d;
}

.button-demo {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-primary {
  background-color: #007bff;
  color: white;
}

.btn-primary:hover {
  background-color: #0056b3;
}

.btn-secondary {
  background-color: #6c757d;
  color: white;
}

.btn-secondary:hover {
  background-color: #545b62;
}

.btn-medium {
  padding: 8px 16px;
  font-size: 14px;
}

.btn-large {
  padding: 12px 24px;
  font-size: 16px;
}

.btn-small {
  padding: 4px 8px;
  font-size: 12px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn:disabled:hover {
  background-color: inherit;
}